Winding device for strand or web material

ABSTRACT

Winding device for strand or web material includes means for winding the material into a wound body, means for producing a value proportional to the number of rotations of the wound body, means for producing a value proportional to the length of the material being wound, storage means connected with both of the value producing means for storing, in an initial winding operation, the values of lengths of wound material appertaining to a respective predetermined number of rotations or vice versa, and control means couplable to the storage means for controlling tension of the material or pressure exerted on the windings of the wound body, in a subsequent winding operation.

United States Patent [72] Inventor Stefan Furst [56] References Cited N gfigg Gem"! UNITED STATES PATENTS S m 969 2,214,355 9 1940 Tiselius et al. 242 7551 9 H5] Patented In 27, 97] 3,151,507 10/1964 Canova et al. 242/7551 X I 73] Assignee Walter Rebels Primary Examiner-George F. Mautz Mnldknglldbadl, Germany Attorneys-Curt M. Avery, Arthur E. Wilfond, Herbert L. [32] Priority May 8, I968 Lerner and Daniel J. Tick [33] Germany [31] P17 74229.9 ABSTRACT: Winding device for strand or web material includes means for winding the material into a wound body, means for producing a value proportional to the number of [54] WINDING DEVICE FOR MD on WEB rotations of the wound body, means for producing a value pro- MATERIAL m Cum 4 D F portional to the length of the material being wound, storage means connected with both of the value producing means for [52] [1.8. CI. 242/7551, storing, in an initial winding operation, the values of lengths of 242/75 .2 wound material appertaining to a respective predetermined [51] Int. Cl B65h number of rotations or vice versa, and control means coupla- Bh 59/00 ble to the storage means for controlling tension of the material [50] Field of Search 242/7551, or pressure exerted on the windings of the wound body, in a .5, 75.2 subsequent winding operation.

PULSE SIGNAL GENERATOR WINDING DEVICE FOR STRAND R WEB MATERIAL My invention relates to winding device for strand, bandshaped and web material or the like as employed for example to produce coils or beams, hereinafter referred to collectively as wound bodies, wherein these wound bodies are formed both of individual threads or bands or the like as well as of a plurality of simultaneously wound threads or bands or the like.

In the case where several of such winding bodies are to be supplied together to an unwinding device, it is desirable that the material wound on all of the winding bodies by of the same length. The same length is sufficient in those cases wherein the rotary speed of the unwinding wound bodies can be varied. However, if the unwinding devices are of the type wherein the wound bodies must unwind at the same rotary speed, for example because all of them must necessarily be driven at the same time, it is desirable not only that the wound length of all the unwinding wound bodies should be the same but also that the diameters of the individual winding bodies should be the same so that in equal intervals of time equal lengths of the material can be unwound from all of the wound bodies.

It is accordingly an object of my invention to provide winding device for strand or web material wherein the successively produced winding bodies have both equal final diameter as well as are wound with material of equal length.

With the foregoing and other objects in view, lprovide a winding device for strand or web material comprising means for winding the material into a wound body, means for producing a value proportional to the number of rotations of the wound body, means for producing a value proportional to the length of the material being wound, storage means connected with both of the value producing means for storing, in an initial winding operation, the values of the lengths of wound material appertaining to a respective predetermined number of rotations or vice versa, and control means couplable to the storage means for controlling tension of the material or pressure exerted on the windings of the wound body, in a subsequent winding operation.

In accordance with further alternate features of my invention I provide a device for producing a value proportional to the number of rotations which emits a pulse signal for each rotation or partial rotation after a predetermined number of rotations, or which is formed of an information or data carrier such as a magnetic tape for example, which is moved at a speed proportional to the rotary speed of the winding device, and which is coordinated with an information or data transmitter, for example a tape recording head, which produces magnetic markings on the information or data carrier at equal time intervals. I

In accordance with another feature of my invention, I provide device for producing values proportional to the length of the wound material wherein a cylinder or roller rotated at the speed of the wound material in dependence on a predetermined number of rotations, which can also correspond to a fraction of a rotation, produces a pulse signal alternately, according to my invention, the device for producing values proportional to the length of the wound material, may be an information or data carrier, such as a magnetic tape, which is moved at a speed proportional to the speed of the wound material, and which is coordinated with an information or data transmitter, such as a tape recording head, which produces magnetic markings on the information or data carrier at equal time intervals.

In accordance with my invention, both of the devices for producing values proportional respectively to the number of rotations of the winding device and to the length of the materia] wound on the wound body are connected to a storage device which either stores the values of the lengths of the wound material appertaining to a respective predetermined number of rotations of the wound body or, conversely, the values of the number of rotations of the wound body appertaining to respective predetermined lengths of the wound material. In this way, the actual winding condition of the beam is recorded in the storage device.

Other features which are considered as characteristic for the invention are set forth in the appended claims.

Although the invention is illustrated and described herein as embodied in winding device for strand or web material, it is nevertheless not intended to be limited to the details shown, since various modifications and structural changes may be made therein without departing from the spirit of the invention and within the scope and. range of equivalents of the claims.

The construction and method of operation of the invention, however, together with additional objects and advantages thereof will be best understood from the following description of specific embodiments when read in connection with the accompanying drawing,'in which:

FIG. I is a diagrammatic elevational view, partly in section, of a composite winding device according to-my invention having two data carriers and both a device for adjusting the tension of the material being wound and a device for applying pressure to the wound body;

FIG. 2 is a fragmentary sectional view of FIG. 1 taken along the line Il-Il in the direction of the arrows;

FIG. 3 is a fragmentary plan view of the magnetic tapes of FIG. I in a stage wherein the markings thereon are in lateral alignment; and

FIG. 4 is a view corresponding to that of FIG. 3 but showing a stage wherein the markings on the respective magnetic tapes are out of lateral alignment with one another.

Referring now to thedrawing and first particularly to FIG. 1 thereof, there is shown a winding device I wherein a thread, band, web or other flexible strand material 2 is wound on a beam 3 to form a wound body 24. In the illustrated winding device 1, the flexible material 2 runs through a tensioning device 4 which is formed biased toward a bearing member 5 and a tensioning runner 6 biased toward the bearing member 5 by a compression spring 7, whichis in engagement at one end thereof with the tensioning runner 6 and abuts at the other end thereof against a compression member 8. A conventional length measuring device of the counter type found in tape recorders, for example, represented in its simplest form by rollers 9, l0 and 11, is disposed between the beam 3 and the tensioning device 4. A device 12, such as a gear train or chain transmission for example, serving to produce values that are proportional to the number of rotations of the wound body 24 is coupled to the beam 3. A device 13 serving to produce values which are proportional to the lengths of the wound-up flexible material 2, such as another gear train or chain transmission for example, is coupled to the length-measuring device 9, l0 and 11. Both devices 12 and 13 are connected to rotary drive wheels of a storage device 14 formed of endless magnetic tapes l5 and 16, serving as information or data carriers, and magnetic recording heads 17 and 18 serving as information or data transmitters.

During the winding operation of a first wound body 24, a socalled lead winding, the magnetic recording heads 17 and I8 produce magnetic markings 23 at predetermined time intervals on the magnetic tapes I5 and 16, and in fact fully independently of the speed of the strand or web 2. For this purpose, the recording heads l7 and 18 are connected through switches 25 and 26 with conventional pulse signal generators 40. The spacings of the markings on the magnetic tapes 15 and 16 are then a measure of the number or rotations of the wound. body 24 and of the speed of the strand or web material 2, respectively.

When winding subsequent wound bodies 24, the magnetic tapes 15 and 16 respectively, are returned to their starting position at the beginning of the winding operation. Thereafter, the recording heads 17 and 18 are switched over by the switches 25 and 26 to receive pulse signals so that they act as information receivers and can pick up the markings on the bands 15 and 16 as pulse signals. These pulse signals are conducted through ampliflers 27 and 28 to step motors 29 and 30 which drive a gear pair 20a and 20b of a differential gear system 20 forming a control device. If, as shown in FIG. 3, no difference or spacing exists between the markings 23 on the magnetic tapes l5 and 16 during the winding operation i.e. the markings 23 are in lateral alignment, both step motors 29 and 30 drive the gears aand 20b of the differential transmission 20 simultaneously in opposite rotary directions so that the pinion 20c and the shaft 31 connected therewith do not rotate. If, as shown in FIG. 4, there is a difference or spacing 32 between the markings 23 however, i.e. the markings 23 of the respective magnetic tapes l5 and 16 are not in lateral alignment because for example, due to reduction of the initial tension of the winding material 2, too large a diameter of the winding occurs and accordingly, for a specific number of rotations, the wound-up length of strand or web material 2 is greater than that of the first wound body, the step motor 30 in this case runs faster than the step motor 29. The pinion 200 is thereby set into rotation so that the shaft 31 rotates in the direction of the arrow 34 as shown in FIG. 2. A lever 21 is connected to the shaft 31 and, through a rod 22 serving as an adjusting member, intensifies the force in the strand or web tensioning device 4 until the markings on both tapes l5 and 16 are synchronized i.e. are brought into lateral alignment as shown in FIG. 3, and therewith conformity of the length of the strand or'web material 2 with the number of rotations of the wound body 24 takes place. Conversely, when the winding diameter and the length of the flexible material 2 being wound are too small, the step motor 29 rotates faster than the step motor 30 so that the force in the tensioning device 4 is reduced. These steps can be repeated during one winding operation. Instead of controlling the tension of the strand or web material 2, the shaft 31 can be connected with a winding pressure device 41 which acts directly on the winding 24 and controls the winding diameter in a conventional manner in accordance with the intensity of the pressure that is exerted. It is also possible to connect a single shaft 31 both with the tensioning device 4 as well as with the winding pressure device 41 through, for example, a single-adjusting member 22.

lclaim:

1. Winding device for strand or web material comprising means for winding the material into a wound body, means for producing a value proportional to the number of rotations of the wound body, means for producing a value proportional to the length of the material being wound, storage means connected with both of said value producing mean for storing, in an initial winding operation values produced by oneof said value producing means appertaining to a respective predetermined measurement of a characteristic of the material being wound of which a proportional value is produced by the other of said value producing means, means for applying a force to the material being wound in a subsequent winding operation, and control means couplable to said storage means for controlling the force applied to the material being wound in a subsequent winding operation so as to maintain therein the same relative values of length of wound material and number of rotations of wound body as in said initial winding operation.

2. Winding device according to claim 2 wherein said storage means is for selectively storing, in said initial winding operation, the values of lengths of wound material appertaining to a respective predetermined number of rotations, and the values of the number of rotations of the wound body appertaining to a respective predetermined length of the wound material.

3. Winding device according to claim 1 wherein said means for applying said force to the material being wound is connected to said control means, said force applying means comprising a device for adjusting the tension of the material being wound.

4. Winding device according to claim 1 wherein said means for applying said force to the material being wound is connected to said control means, said force applying means comprising a device for applying pressure to the wound body so as to adjust the diameter thereof.

5. Winding device according to claim 1 wherein said storage means comprises a pair of data carriers, one of said data carriers being movable at a speed proportional to the rotary s eed of said material winding means and the other of said ata carriers being movable at a speed proportional to the speed of travel of the material beingwound, and a data transmitter coordinated with each of said data carriers for producing markings on the respective data carrier at equal time intervals.

6. Winding device according to claim 1 wherein said storage means comprises a data carrier movable at a speed proportional to the rotary speed of the material winding means, and a datatransmitter coordinated with said data carrier for producing markings on said data carrier appertaining to respective predetermined lengths of the wound material.

7. Winding device according to claim 1 wherein said storage means comprises a data carrier movable at a speed proportional to the speed of travel of the material being wound, and a data transmitter coordinated with said data carrier for producing markings on said data carrier appertaining to a predetermined number of rotations of said material winding means.

8. Winding device according to claim 1 wherein said storage means comprises at least one magnetic tape and a magnetic recording head coordinated with said magnetic tape for making the same magnetically with values produced by the respective value producing means during said initial winding operation, said magnetic recording head being adapted to read the markings on said magnetic tape, during subsequent winding operations, and transmit pulse signals in accordance therewith to said control means.

9. Winding device according to claim 1 wherein said control means comprises differential gearing including a gear pair rotatably driven in accordance with the values stored in said storage means, and a pinion operatively connected to said means for applying said force to the material being wound.

l0. Winding device according to claim 9 wherein said force applying means is connected by at least one adjusting member to said pinion and comprises a device for varying the tension of the material being wound and a device for applying pressure to the wound body for varying the diameter thereof. 

1. Winding device for strand or web material comprising means for winding the material into a wound body, means for producing a value proportional to the number of rotations of the wound body, means for producing a value proportionAl to the length of the material being wound, storage means connected with both of said value producing mean for storing, in an initial winding operation values produced by one of said value producing means appertaining to a respective predetermined measurement of a characteristic of the material being wound of which a proportional value is produced by the other of said value producing means, means for applying a force to the material being wound in a subsequent winding operation, and control means couplable to said storage means for controlling the force applied to the material being wound in a subsequent winding operation so as to maintain therein the same relative values of length of wound material and number of rotations of wound body as in said initial winding operation.
 2. Winding device according to claim 2 wherein said storage means is for selectively storing, in said initial winding operation, the values of lengths of wound material appertaining to a respective predetermined number of rotations, and the values of the number of rotations of the wound body appertaining to a respective predetermined length of the wound material.
 3. Winding device according to claim 1 wherein said means for applying said force to the material being wound is connected to said control means, said force applying means comprising a device for adjusting the tension of the material being wound.
 4. Winding device according to claim 1 wherein said means for applying said force to the material being wound is connected to said control means, said force applying means comprising a device for applying pressure to the wound body so as to adjust the diameter thereof.
 5. Winding device according to claim 1 wherein said storage means comprises a pair of data carriers, one of said data carriers being movable at a speed proportional to the rotary speed of said material winding means and the other of said data carriers being movable at a speed proportional to the speed of travel of the material being wound, and a data transmitter coordinated with each of said data carriers for producing markings on the respective data carrier at equal time intervals.
 6. Winding device according to claim 1 wherein said storage means comprises a data carrier movable at a speed proportional to the rotary speed of the material winding means, and a data transmitter coordinated with said data carrier for producing markings on said data carrier appertaining to respective predetermined lengths of the wound material.
 7. Winding device according to claim 1 wherein said storage means comprises a data carrier movable at a speed proportional to the speed of travel of the material being wound, and a data transmitter coordinated with said data carrier for producing markings on said data carrier appertaining to a predetermined number of rotations of said material winding means.
 8. Winding device according to claim 1 wherein said storage means comprises at least one magnetic tape and a magnetic recording head coordinated with said magnetic tape for making the same magnetically with values produced by the respective value producing means during said initial winding operation, said magnetic recording head being adapted to read the markings on said magnetic tape, during subsequent winding operations, and transmit pulse signals in accordance therewith to said control means.
 9. Winding device according to claim 1 wherein said control means comprises differential gearing including a gear pair rotatably driven in accordance with the values stored in said storage means, and a pinion operatively connected to said means for applying said force to the material being wound.
 10. Winding device according to claim 9 wherein said force applying means is connected by at least one adjusting member to said pinion and comprises a device for varying the tension of the material being wound and a device for applying pressure to the wound body for varying the diameter thereof. 